Issue 22, 2016

Free-standing micropatternable nanocomposites as efficient colour converting filters for light emitting devices

Abstract

Three different families of chemically engineered rod-shaped CdSe/CdS colloidal nanocrystals have been embedded into a poly(methyl methacrylate) matrix to realize a set of color-tunable photoluminescent filters for RGB light emitting devices, which demonstrate excellent optical transparency (in the range of wavelengths not corresponding to nanocrystal absorption), efficient photoluminescence and good thermal- and photo-stability. Accurate morphological and optical characterization of nanocomposite foils is provided as a function of nanorod size and content, and their color conversion properties are investigated in combination with a blue-emitting LED source. This approach combines the tunable optical features of inorganic quantum-confined light emitters with the facile processability of the polymeric host and offers a highly versatile design tool, which can be exploited in a wide spectrum of lighting and photonic devices. The preparation procedure reported here is even compatible with the implementation of an engineered array of microlens on the front-end surface of the nanocomposite foil and thus makes possible a tailored control of the color-converted photometric pattern.

Graphical abstract: Free-standing micropatternable nanocomposites as efficient colour converting filters for light emitting devices

Supplementary files

Article information

Article type
Paper
Submitted
18 feb. 2016
Accepted
19 apr. 2016
First published
20 apr. 2016

J. Mater. Chem. C, 2016,4, 5001-5009

Free-standing micropatternable nanocomposites as efficient colour converting filters for light emitting devices

P. Pareo, L. Carbone, F. Mariano, A. Zacheo, G. Accorsi, V. Arima, G. Gigli and M. Manca, J. Mater. Chem. C, 2016, 4, 5001 DOI: 10.1039/C6TC00707D

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